. >> reporter: having worked this case for more than a decade, recently retired fbi agent r.j. gallagher, rick cope of the u.s. marshals and dan clot of the u.s. department of corrections know exactly what happened next. >> the night of the incident, two young men came right through that door with loaded weapons. >> reporter: investigators say walter mcgee, then 22 and george wright, then 19, beat patterson savagely. >> he was beaten so severely that he was unrecognizable. >> reporter: two days later patterson died. police soon caught his attackers and both pled no contest to murder and went to prison. but in 1970 rice escaped. they hot wired the warden's car? >> yes. >> reporter: he ended up in detroit joining the black militant movement. >> he high jacks an airplane. >> the hijackers are described as three men, one dressed as a priest. >> reporter: that priest smuggle add gun on board in a hollowed-out bible. i. >> i said, look, undock that gun and we can talk. i said what do you want? he says we want $1 million and we want to go to algiers. >> reporter: the hijackers demande